What will be the nominal rate of return on a perpetual preferred stock with a $100 par value, a stated dividend of 10% of par, and a current market price of (a) $56.00, (b) $89.00, (c) $107.00, and (d) $131.00? Round answers to the nearest hundredth.
a._____ ?%
b. ______ ?%
c. _______?%
d. ______?%